Massive His bundle injury current corresponds with acute trauma and slowing of conduction that has to subside before pacing threshold assessment.

The article presents a case study of a 72‐year‐old patient with heart failure and chronic atrial fibrillation. The article discusses His bundle (HB) pacing emerges as a potential new standard ventricular pacing option, tracings that were recorded on an electrophysiology system during pacemaker implantation, and pacing threshold assessment.